Keystones — Cornerstone
Five GCSE retrieval questions · 24 January 2013 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 5⁄7 + 3⁄4
Answer: 41⁄28 -
2. Algebra Two-step equations
Solve: 6x + 8 = 68
Answer: x = 10 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 8cm and 15cm
Answer: 17cm -
4. Ratio Sharing in a ratio
Share 45 in the ratio 2:1
Answer: 30 and 15 -
5. Statistics Mean
Find the mean of: 7, 14, 11, 12
Answer: 11